It's a great MMO of Pokémon. Seeing Pokémon walking in the freedom, real-time battles with other online players, gives more sense of being in the Pokémon World than a turn-based combat with static images of the classic games, He even has the music and references of the anime series.
However, it has some bugs, there are areas that are uninhabited from the Pokémon, the translations aren't 99% and in places where it says there is city, simply, there is no city.